Windows 2000 + Communicator 2007 + CA StandAlone (not in domain) = ERROR!!! RRS feed

  • Question

  • Hi all,


    I`ve a strange error...


    Windows 2000 Communicator clients can communicate with XP and Vista clients without problems, but when 3 or more users are in conference, and voice or audio resources are activated, i`ve the errors bellow and the users are dropped from session. So, i can affirm that p2p connetions are ok, p2any have problems.


    Follow the errors:



    On Client


    Tipo de evento:               Aviso

    Origem do evento:         Communicator

    Categoria do evento:    Nenhuma

    Id. do evento:   11

    Data:                     1/22/2008

    Hora:                    4:40:33 PM

    Usuário:                              N/A

    Computador:    WPRJO022F


    A SIP request made by Communicator failed in an unexpected manner (status code 80ef01e8). More information is contained in the following technical data:


     RequestUri:   sip:userxxx;gruu;opaque=app:conf:audio-video:id:C49D9A9E30432C40AF557DE4AAF54130

    From:         sip:userxxx;tag=e7763ca508

    To:           sip:userxxx;gruu;opaque=app:conf:audio-video:id:C49D9A9E30432C40AF557DE4AAF54130;tag=65e0fd1e

    Call-ID:      f66703d7b8794ee78038e5dcd3ccfd03

    Content-type: application/sdp;call-type=audiovideo



    o=- 0 0 IN IP4


    c=IN IP4


    t=0 0

    m=audio 63360 RTP/AVP 114 111 112 115 116 4 8 0 97 101

    a=candidate:LwaYlVEnsw6vGhcQwv4aI3ckM9SqjRXcEaMk0E7v8/U 1 1UrQpxNP/bB9WpdzdXUHhg UDP 0.830 63360

    a=candidate:LwaYlVEnsw6vGhcQwv4aI3ckM9SqjRXcEaMk0E7v8/U 2 1UrQpxNP/bB9WpdzdXUHhg UDP 0.830 6656



    a=rtpmap:114 x-msrta/16000

    a=fmtp:114 bitrate=29000

    a=rtpmap:111 SIREN/16000

    a=fmtp:111 bitrate=16000

    a=rtpmap:112 G7221/16000

    a=fmtp:112 bitrate=24000

    a=rtpmap:115 x-msrta/8000

    a=fmtp:115 bitrate=11800

    a=rtpmap:116 AAL2-G726-32/8000

    a=rtpmap:4 G723/8000

    a=rtpmap:8 PCMA/8000

    a=rtpmap:0 PCMU/8000

    a=rtpmap:97 RED/8000

    a=rtpmap:101 telephone-event/8000

    a=fmtp:101 0-16




    Response Data:


    488  Not Acceptable Here

    ms-diagnostics:  7013;source="xxx.xxx.xxx.xx";reason="SRTP-encrypted media required to join";component="AvMcu"




     If this error continues to occur, please contact your network administrator. The network administrator can use a tool like winerror.exe from the Windows Resource Kit or lcserror.exe from the Office Communications Server Resource Kit in order to interpret any error codes listed above.



    On Server


    Event Type:       Warning

    Event Source:   OCS Audio-Video Conferencing Server

    Event Category:               (1017)

    Event ID:             32011

    Date:                    1/22/2008

    Time:                    4:40:30 PM

    User:                    N/A

    Computer:         2K3RJONK3


    A user attempted to connect to a conference, but the INVITE request was not valid.  The request was rejected.


    Conference URI: sip:xxxx;gruu;opaque=app:conf:focus:id:C49D9A9E30432C40AF557DE4AAF54130, User URI: sip:xxx.xxx


    For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.\




    If anyone can help me...







    Tuesday, January 22, 2008 7:20 PM

All replies

  • Hello,


    I faced the same pb today:

    the issue is with the client's OS, Windows 2000, which doesn't support SRTP natively.

    To solve quickly the pb, go to the OCS pool, AV server properties, and then change encryption level: by default it must be encrypted, which is possible with XP, but not 2000. Put the encryption level to allow encryption, but not forced. (sorry my interface is in French, don't have the real words)


    Tuesday, February 5, 2008 11:57 AM